3rd Class Stationary Steam Engineer
License Prep| Latest Complete
Questions And Answers
heating value of natural gas is expressed in _______ - correct-answer -therms
spalling in a boiler occurs in the_______ - correct-answer -combustion chamber
economizers are used in Plants to _____ - correct-answer -heat feedwater using
gases of combustion
fuel oil with a high viscosity_______ - correct-answer -it's hard to pump
boiler water is chemically treated to _____ - correct-answer -prevent scale from
forming on the boiler heating surfaces
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steam pressure gauges are calibrated in _____ - correct-answer -pounds per
square inch
feed water temperature raised 10 degrees Fahrenheit from exhaustion or heat
from gases of combustion result in an increase of ________% in plant efficiency -
correct-answer -1
the evaporation of 34.5 lb of water from and at 212°f is a standard for ______ -
correct-answer -1 bhp
the tubes in a water tube boiler are fastened by ______ - correct-answer -rolling
and expanding in drums and headers
a dry pipe separator in a boiler _______ - correct-answer -maintains a high-quality
Steam
a (n) ________ valve offers the least resistance to flow - correct-answer -gate
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if valves are installed between the boiler and water column, they must be
_______ - correct-answer -os&y or lever-type, locked or chained open
steam withdrawn from a steam turbine under pressure control is __________
Steam - correct-answer -extraction
in a closed feedwater heater, the_______ - correct-answer -Steam and water do
not mix
a compound gauge registers ________% - correct-answer -either vacuum or
pressure
a Norse that analyzer measures _________ in gases of combustion - correct-
answer -carbon dioxide, oxygen, and carbon monoxide
the fyrite analyzer can be used to measure - correct-answer -oxygen
automatic combustion controls on a boiler control _______ - correct-answer -Fuel
and air ratio
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if the firing rate increases on a boiler equipped with a convection type
superheater, the superheater temperature will________ - correct-answer -
increase
a thermostatic steam trap can be used _________ - correct-answer -on high or
low pressure systems
heat that changes the temperature of a substance but not its state is_________ -
correct-answer -sensible heat
_________is carrying over particles of water with the steam - correct-answer -
priming
if a boiler is equipped with an automatic non-return valve, it must be _______ -
correct-answer -the valve closest to the boiler shell
a broken baffle on a water tube boiler would cause ________ - correct-answer -
increase in chimney temperature